To my surprise the Hawkeye/Black Widow fight was quite nice. More of your classic action movie type of fight with some good moments. Loved the way Renner sold his head bump as he tried to get up and kept slipping down. Hulk vs Thor was my vote though. The shot where Thor swings Mjolnir at Hulk when he's running towards him and it goes in slow mo made me do a small fist pump towards my bro-in-law. Like a kid again.